Vapour permeability/ Green Building & Sustainable Home Renovation Information & Advice

...vapourpermeable sheathing membrane. This risk may dictate the use of insulation products with highvapourpermeability含水量低，比如矿物纤维。”Where to putvapourbarriers (CMHC): "Materials that act asvapourbarriers (vapourretarders), including certain types of insulation, must be loca...

...vapours can be nausea, headaches, dizziness and fatigue. Read labels carefully and take the proper safety precautions. Wear gloves, eye protection and a proper respirator mask with cartridges rated forvapours. This is important - not all respirators are the same, some are specific to dust particles and won’t offer com...

Larson truss wall systems for new green home building & renovations for max wall insulation A Larsen Truss is a type of lightweight & non structural double-stud wall assembly that allows for thicker insulation, is ideal for dense-packed cellulose insulation wall systems and a very high R-value building envelope with...

...vapourbarrier primer © Benjamin Moore Interior gypsum board: Latex paint ( orvapourretarder primer ) is recomended as an interiorvapourcontrol layer below grade. It is most important to not include a polyethylenevapourbarrier or othervapourimpermeable materials that prevent walls from drying. 6 mil...

Insulation slows the rate of heat transfer, helping keep homes warmer in winter and cooler in summer. How well-insulated your home is will determine how comfortable it is and how much you will spend on energy for heating and cooling, and in some respects, how durable it will be. The transfer of heat (or heat loss) o...

Material choices for window frames: Window frames can be made from a variety of materials offering different levels of performance and insulation values. Air in the cavities between panes expands as it heats up and contracts as it cools, which puts pressure on the seals and frames. When we speak of durable and stu...

First published in ecoHouse Canada The thermal performance of wall assemblies and insulation products has long been characterized using R-value, a metric which describes thermal resistance. While R-value is useful, it doesn’t tell the whole story about heat flow through building enclosures such as walls and roofs. ...

...vapourbarriers: The job of avapourbarrier is to preventvapourdiffusion and the job of an air barrier is to stop air leakage through differences in air pressure between inside and out. A wall system should have onevapourbarrier, but can have many air barriers. Avapourbarrier can act as a very effective air ba...

...Vapourretarder latex primers: Firstly, the classification of a material as either an impermeable ‘vapourbarrier’ or a semi-permeable ‘vapourretarder’ is determined by how much watervapourpasses through the material under specific conditions. There arevapourretarder primers on the market that exceed the requi...

...permeabilityin homes: Find out All about Air &VapourBarriers in High Performance Homes - EcoHome Guide Discover the Aerobarrier Home & Attic Air Sealing Spray - EcoHome Guide Replacing Polyethylene Vapor Barriers with Paint - EcoHome Guide

...vapourbarrier, preventing air movement and controlling water movement. The interior finish is done with veneer plywood sheets that make for a very attractive ceiling to the room below. For the above-grade walls, we ended up using a double stud wall assembly. The structure of the house is built with 2x8 lumber, which...